UE 4.21 | Character following Spline

Hay guys,

i’ve trying that already 3 days now and i can’t get it to work, that my character after paying an npc(right now a cube) is following a Spline which let’s him fly to the destination.

i’ve seen much tutorials on how attach something and so on but i can’t get it ready.

I’ve created a Spline blueprint with a Timeline and a cube which is following the path on playstart.
But how can i attach a Player character on it? and let it start after “paying” ?

Thanks for everyone who’s helping me.